A.Hard rubber
B.Canvas
C.Leather
D.Sponge rubber
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A.at the lowest point
B.near the batteries
C.at the highest point
D.only when charging is in progress
A.take part
B.watch
C.go to their quarters
D.stay out of the way and do what they want
A.obliged
B.obliging
C.oblige
D.being obliged
A.repair
B.repaired
C.repairing
D.to repair
A.good getting ground
B.good holding ground
C.good grabbing ground
D.good handling ground
最新試題
Keep clear（）the buoy.
The radiotelegraphy safety messages for condition indicating distress，urgency and safety，respectively，are（）.
Which mooring line is likely to undergo the most strain when docking a ship under normal conditions?（）
Good anchorage may be obtained anywhere in this water area，the bottom being generally mud and sand，vessel may have（）.
Which method is used to detect rot in manila lines?（）
Which tool is used to open the strands of fiber lines when making an eye splice?（）
In order to prevent galvanic corrosion，an aluminum boat must be insulated from the davits and gripes. Which of the following is acceptable as an insulator?（）
Where would you find the call sign or call letters of the radio station on your ship?（）
Three SHORT BLASTS mean（）.
Smoking in bed on a ship is prohibited（）.